Re: ANNOUNCE: protocol-buffers-0.2.9 for Haskell is ready

Chris Kuklewicz wrote:

I am cross-posting this message to several lists.

I had learned the trick before the documentation was updated. It seems I have used a very unreliable trick. And the "use castToSTUArray" suggested alternative is a really poor one since I am not using arrays at all.

castSTUArray is the way GHC does it - the idea is to allocate a small array, store the Float/Double in it, cast the type of the array to Word32 or whatever, and then read out the contents. It's more or less equivalent to the peek/poke solution, except that it doesn't need unsafePerformIO. GHC's code is here: (look for floatToWord): http://darcs.haskell.org/ghc/compiler/cmm/PprC.hs Cheers, Simon